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PPU LLVM: simplify VADDCUW, VADDUBS, VADDUHS, VADDUWS

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This commit is contained in:
Nekotekina 2018-07-05 19:39:08 +03:00
parent caf827344f
commit 9d9869e803
1 changed files with 13 additions and 13 deletions
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26
rpcs3/Emu/Cell/PPUTranslator.cpp
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@ -583,7 +583,7 @@ void PPUTranslator::VADDCUW(ppu_opcode_t op)
{ {
const auto a = get_vr<u32[4]>(op.va); const auto a = get_vr<u32[4]>(op.va);
const auto b = get_vr<u32[4]>(op.vb); const auto b = get_vr<u32[4]>(op.vb);
set_vr(op.vd, eval(ucarry(a, b, eval(a + b)) >> 31)); set_vr(op.vd, zext<u32[4]>(a + b < a));
} }
void PPUTranslator::VADDFP(ppu_opcode_t op) void PPUTranslator::VADDFP(ppu_opcode_t op)
@ -635,11 +635,11 @@ void PPUTranslator::VADDUBM(ppu_opcode_t op)
void PPUTranslator::VADDUBS(ppu_opcode_t op) void PPUTranslator::VADDUBS(ppu_opcode_t op)
{ {
const auto a = get_vr<s8[16]>(op.va); const auto a = get_vr<u8[16]>(op.va);
const auto b = get_vr<s8[16]>(op.vb); const auto b = get_vr<u8[16]>(op.vb);
const auto s = eval(a + b); const auto s = eval(a + b);
const auto x = eval(ucarry(a, b, s) >> 7); const auto x = eval(s < a);
set_vr(op.vd, eval(s | x)); set_vr(op.vd, select(x, splat<u8[16]>(-1), s));
SetSat(IsNotZero(x.value)); SetSat(IsNotZero(x.value));
} }
@ -652,11 +652,11 @@ void PPUTranslator::VADDUHM(ppu_opcode_t op)
void PPUTranslator::VADDUHS(ppu_opcode_t op) void PPUTranslator::VADDUHS(ppu_opcode_t op)
{ {
const auto a = get_vr<s16[8]>(op.va); const auto a = get_vr<u16[8]>(op.va);
const auto b = get_vr<s16[8]>(op.vb); const auto b = get_vr<u16[8]>(op.vb);
const auto s = eval(a + b); const auto s = eval(a + b);
const auto x = eval(ucarry(a, b, s) >> 15); const auto x = eval(s < a);
set_vr(op.vd, eval(s | x)); set_vr(op.vd, select(x, splat<u16[8]>(-1), s));
SetSat(IsNotZero(x.value)); SetSat(IsNotZero(x.value));
} }
@ -669,11 +669,11 @@ void PPUTranslator::VADDUWM(ppu_opcode_t op)
void PPUTranslator::VADDUWS(ppu_opcode_t op) void PPUTranslator::VADDUWS(ppu_opcode_t op)
{ {
const auto a = get_vr<s32[4]>(op.va); const auto a = get_vr<u32[4]>(op.va);
const auto b = get_vr<s32[4]>(op.vb); const auto b = get_vr<u32[4]>(op.vb);
const auto s = eval(a + b); const auto s = eval(a + b);
const auto x = eval(ucarry(a, b, s) >> 31); const auto x = eval(s < a);
set_vr(op.vd, eval(s | x)); set_vr(op.vd, select(x, splat<u32[4]>(-1), s));
SetSat(IsNotZero(x.value)); SetSat(IsNotZero(x.value));
} }